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INDONESIA
IDJP (Indonesian Journal of Pharmaceutics)
Published by Universitas Padjadjaran
ISSN : -     EISSN : 25978748     DOI : -
Core Subject :
The Indonesian Journal of Pharmaceutics (IdJP) is an established international journal for pharmaceutical scientists concerned in all fields of pharmaceutical sciences, including pharmaceutical preformulation, formulation, manufacturing technologies, drug delivery systems, biopharmaceutics, and pharmacokinetics for drugs, vaccines and biologicals. IdJP also includes pharmaceutical engineering and industrial pharmacy topics.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 2, Issue 1, Jan - April 2020" : 5 Documents clear
Solubility Enhancement of Clozapine Through Co-Crystal Formation with Isonicotinamide Fikri Alatas; Hestiary Ratih; Hesti Kurnia; Sundani Nurono Soewandhi
Indonesian Journal of Pharmaceutics Vol 2, Issue 1, Jan - April 2020
Publisher : Universitas Padjadjaran (Unpad)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/idjp.v2i1.23957

Abstract

Clozapine (CLO) is an effective atypical antipsychotic to control the symptoms of psychosis and schizophrenia. Clozapine has low solubility and high permeability, so it is classified as a class II in the biopharmaceutical classification system. The aim of this study was to improve the solubility and dissolution rate of clozapine by clozapine-isonicotinamide (CLO-INA) co-crystal formation. CLO-INA co-crystal was prepared by solvent-drop grinding (SDG) method using water as a solvent. Characterization of SDG result was conducted by powder X-ray diffraction (PXRD) and Fourier transform infrared (FTIR).  Solubility test was performed in water at room temperature. The dissolution test was performed in 900 mL of pH 6.8 phosphate buffer solution, 50 rotation per minute of paddle rotation, and at 37±0.5 °C. The PXRD pattern of  SDG result of CLO-INA has many different peaks from its parent components, and this may indicate the co-crystal formation. The solubility of the co-crystal clozapine was fifteen folds higher than pure clozapine. The dissolution rate of CLO-INA co-crystal increased in the first 10 minutes compared to pure clozapine. Percentage of clozapine dissolved after 10 minutes from CLO-INA co-crystal and pure CLO were 10.2 and 2.4%, respectively. CLO and INA can form co-crystal by SDG method that can improve the solubility and dissolution rate of clozapine.Keywords: Clozapine, Isonicotinamide, Co-crystal, Solubility, Dissolution
Ointment Formulation and Test Safety from Sapodilla Manila Leaf Extract (Manilkara zapota L.) with Variation of Ointment Base as an Ulcer Medicine Imas Maesaroh; Daniar Pratiwi; Leli Agustin
Indonesian Journal of Pharmaceutics Vol 2, Issue 1, Jan - April 2020
Publisher : Universitas Padjadjaran (Unpad)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/idjp.v2i1.25770

Abstract

Leaf extract of Manilkara zapota L has antibacterial activity against Staphylococcus aureus at a  base on potency test of 50%, where the bacteria are the cause of boils. Some of effort to facilitate the use and increase the activity of active substances, then ointments are prepared on a variety of ointment bases. This study aims to prepared Manilkara zapota L leaf extract into ointment formulations, and chosed the best of ointment base formulations that meets the requirements standards for good ointment preparations. The extract was obtained by maceration using ethanol 96%. Ointments are formulated with four different types of ointment bases, which are hydrocarbon base, absorbing base, water removed bases, and water soluble base. The ointment that has been produced is tested for the physical characteristics such as organoleptic test, homogeneity, pH, spreadibility, adhesion, and viscosity had been tested on manufactured ointments. The results of this study indicate that leaf extract of Manilkara zapota L can be formulated into ointment preparations, variations in the ointment base affect the physical characteristics of ointment preparations.Keywords: Ointment, Manilkara zapota L Leaf, Antibacterial, Staphylococcus aureus
Formulation of Antioxidant Emulgel containing Beluntas China (Gynura pseudochina (L.) DC) Fitriani Jati Rahmania; Marline Abdassah; Muhaimin Muhaimin; Anis Yohana Chaerunisaa
Indonesian Journal of Pharmaceutics Vol 2, Issue 1, Jan - April 2020
Publisher : Universitas Padjadjaran (Unpad)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/idjp.v2i1.26106

Abstract

Skin constantly exposed by the environmental stresses, such as pollutants, solar radiation, heat, and cold, which cause the free radicals that cause premature aging. This bad effects of free radicals can be reduced by natural antioxidants such as Beluntas china (Gynura pseudochina (L.) DC) extract. The antioxidants use of beluntas china extract for skin will be more optimal if it is applied by appropriate form, emulgel, which has stronger consistency and longer contact time than gel. The aim of this research was to formulate an antioxidant emulgel from beluntas china extract, which is effective, stable, and safe with the best gelling agent. The extract was formulated by variety types of gelling agents which were carrageenan, hydroxypropyl methylcellulose (HPMC), and carbomer 934. Then, the physical stability was evaluated, including organoleptic, homogeneity, pH, viscosity, and freeze thaw. The results showed that formulation of carbomer 934 1% 2xIC50 extract concentration give the best physical stability evaluation for 60 days storage time.Keywords: antioxidant, beluntas china extract, emulgel, free radicals, skin
The Reductive Activity of Human Liver Microsomes for Vitamin K Epoxides Masashi Kawano; Takuya Araki; Hideaki Yashima; Tomonori Nakamura; Koujirou Yamamoto
Indonesian Journal of Pharmaceutics Vol 2, Issue 1, Jan - April 2020
Publisher : Universitas Padjadjaran (Unpad)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/idjp.v2i1.25302

Abstract

Vitamin K (VK) is oxidized to vitamin K epoxide (VK-O) during the production of VK-dependent blood clotting factors. Thereafter, VK-O is reduced to VK by vitamin K epoxide reductase (VKOR) in the liver and reused. This reductive reaction is inhibited by warfarin, an oral anticoagulant. VK in nature is roughly divided into two types, VK1 (phylloquinone) and VK2 (menaquinone). Although their bioavailabilities and elimination half-lives from human blood differ, information on the influence of each VK on the effectiveness of warfarin is limited. In this study, the difference in the metabolism of VK1-O and MK4-O by VKOR was evaluated in an in vitro study using human liver microsomes. The results showed that the substrate affinity (1/Km), and the maximum reaction rate (Vmax) of the VKOR reduction was around 7 and 4 times higher for MK4-O than for VK1-O, respectively. The intrinsic clearance of MK4-O, obtained by dividing the Vmax value by the Km value, was about 30 times greater than that of VK1-O. According to these data, the production of VK-dependent blood coagulation factors can be considered to be dominated mainly by MK4-O, at least under normal conditions. We may thus have to be more careful about controlling the intake of MK4 than VK1 in patients receiving warfarin therapy.Keywords: vitamin K1 (phylloquinone), vitamin K2 (menaquinone), VKOR, warfarin
A Novel of Floating Delivery System is a Tool to Enhance Absorption of Drug: A Review Iyan Sopyan
Indonesian Journal of Pharmaceutics Vol 2, Issue 1, Jan - April 2020
Publisher : Universitas Padjadjaran (Unpad)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/idjp.v2i1.26103

Abstract

This assessment of a floating drug for a novel of new drug delivery system (NDDS) is written to elucidate FDDS based on existing literature. The most recent progresses of FDDS include the formulation and physiological variables that could affect gastric retention and formulations are discussed in detail. This review also summarizes method assessments for FDDS pharmaceutical dosage form and its classification. FDDS. FDDS is made to increase the absorption of the drug that is expected to dissolve in the stomach so that the drug enters the intestine in a dissolved state and the fraction of the absorbed drug increases. FDDS approach is the best way to deal with drugs with low solubility in the digestive tract.Keywords : Floating Tablet, Evaluation, Gastric Retentive

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